Siemens SINAMICS S 1PH7 - 5.4.6 Gearbox Stage Selection

Motor components (options)
5.4 Gearbox
1PH7 induction motors (Machine tools)
Configuration Manual, (APH7W), 04/2009, 6SN1197-0AD72-0BP0
201
5.4.6 Gearbox stage selection
When changing the gearbox stage, the following information must be carefully observed:
● Only change over the gearbox stage at standstill; e.g. while changing the tool.
● During selection, the direction of rotation should be changed approximately 5 times per
second. The gears normally mesh at the first direction of rotation change so that selection
times of between 300 and 400 ms can be achieved.
● The motor may only start to accelerate 200 ms after the changeover has been completed.
● The selection must be monitored using a time relay.
Changeover should be withdrawn if the changeover command was not able to be
executed after 2s.
A time limit of 10 s should be applied for approximately 4 to 5 additional attempts to
change the gearbox stage.
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